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Carolyn will know this without looking at the genetic calculator. But I'll have to see what I can get out of the two hens with pumba as dad.

The three birds in the cardboard nestbox are your birds, aren't they? Dad is whiteface and one of the hens is whiteface, so all the babies from that pair will be whiteface too. The pearl hen is not whiteface, so any chicks that are not whiteface will definitely be her children.

The big question is whether the pearl hen is split to whiteface or not. If she is, then it's expected that half of her babies will be whiteface. But this is a statistical average, not something that's guaranteed to happen in every clutch. We also don't know how many eggs each hen laid - maybe each one laid five eggs, or maybe it was six and four or some other number.

If you get 7 or 8 whiteface babies and two non-whiteface, there's a high probability that the pearl hen is split whiteface and you can't be too sure about which hen is the mother of a specific whiteface chick. If you get five whiteface and five non-whiteface, it seems likely that she is not split and you can easily tell which chick came from which mother. If you get six whiteface and four non-WF it's a lot more uncertain.

Whiteface chicks can be identified as soon as they hatch because they have white down. Non-whiteface chicks have yellow down.